This book is a must for everyone who is interested in martial arts. It handles a great variety of techniques besides history and philosophy. The technical versatility of Ju-jutsu can be clearly seen in the contents of this book(see preview). With 428 pages and over 1500 photo's it can be classified as a complete all-round book. Edgar Kruyning is a leading authority on what remains of Minoru Mochizuki's teachings today.